1. (25 points) Let A = -479-8 b= 2 (a) Use the Cramer's rule to find the solution to Ax = b. (b) Use the Gaussian elimination to find the solution to Ax = b. (c) Give the LU decomposition of A. (d) Use the inverse of A to find the solution to Ax = b. (e) Let B = 2 Give the eigenvalue decomposition of B (diagonalization